Well the top three hardest are Diamond, Sapphire and Ruby, and an easy way to remember is: red-white & blue stones! The hardness of a gemstone is measured on its place on Mohs scale of hardness. 10 on Mohs scale being the hardest known naturally occurring substance– and the honor goes to the diamond
Although the hardest natural stone on the planet is a diamond that is rated ten on the Mohs scale, granite is known as the most durable and hardest natural stone that is used in construction material and is measured six on Mohs scale.
The hardest mineral commonly found in granite is quartz, which is normally a somewhat translucent, white to grey colored mineral.
<em>(</em>so from your options granite is the hardest to scratch <em>)</em>
Leopold II himself never step foot in the Congo during the entire time he ruled over it.
If the rubber quota was not met, then the consequence was death. The Force Publique, who was Leopold's personal police force set in the Congo, was required to collect a right hand per successful kill. hands could've been collected by FP officers, or by the villagers themselves. Since bullets couldn't be wasted, hands were sometimes chopped off while the victim was still alive. Often times, when villages were expected to pay the different with hands, they'd attack other villages to gather hands.
At least 500 Chinese labourers were imported to work on railways in the Congo, but a majority of them either left or died.
Well there is no exact answer for that but throughout history there are tales of sacrifice for the gods. (Perhaps looking into the way they sacrificed can help)
